Answer:
Option A is correct. Statements b,c and d are true
Explanation:
Step 1: Data given
Proton = a subatomic particle with a positive electric charge of +1 and a mass slightly less than that of a neutron.
Neutron = a subatomic particle of about the same mass as a proton but without an electric charge
electron = a subatomic particle whose electric charge is negative one elementary charge.
The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom
Step 2: Statements
(a) Protons have a charge of -1.
This is false. Protons have a charge of +1
(b) Neutrons have no charge.
This is true
(c) An electron has negligible mass compared to the mass of a neutron
This is true
(d)Number of proton equals to number of electrons on a stable atom
This is true. A stable atom has a charge of 0. this means the same amount of protons and electrons
Option A is correct. Statements b,c and d are true
